Paint-spraying device



A. H. DOWNS PAINT SPRAYING DEVICE Filed Jan. 2:5, 19:28

I Hi 1 a avwemtoz Patented Apr. 21, 1931:

UNITED STATES PATENT OFFICE AUSTIN H. DOWNS, OF NEWARK, NEW JERSEY, 'ASSIGNOB TO ECLIPSE AIR BRUSH COMPANY, INC., OF NEWARK, NEW JERSEY,

A. CORPORATION OF NEW JERSEY PAINT-SPRAYING DEVICE Application filed January 23, 1928.

This invention relates to improvements in paint spraying devices and more particularly to devices which are of the cup gun type, that is whichinclude the gun or paint spraying instrument itself with an attached container for the liquid to be sprayed.

The principal object of this invention includes the rovision of anew form of construction w sometimes called, may be quickly and readily and securely attached to and detached from the paint spraying gun or instrument in such a way that a relatively high pressure of air may be used in the cup to force the liquid therein through the liquid ports or passages in the gun or paint spraying instrument to the point of atomization and application.

Another object of this invention is the provision in a construction of this kind of a lid or cover for the cup or container, the lid or cover, while being permanently fixed in position and connected to the gun, may nevertheless be detached therefrom in case of necessity, and means associated with the'lid or cover for securely fastening and clamping the same on to of the cup or container to securely close t e same and permit the application of relatively high pressure thereto.

Further objects of the invention include improvements in details of construction whereby this connection may be quickly and readily made without the necessity of ac-' curate adjustment and at the same time permit. the application of air pressure to the contents of the cup or container, and the discharge of the liquid therefrom when the liquid valve in the gun or paint spraying instrument is open.

To the accomplishment of the foregoing and such other objects as may hereinafter appear, this invention consists in the construe tion, combination and arrangement of parts hereinafter described and then sought to be defined in'the appended claims, reference 4 being had to the accompanying drawings forming a part hereof and which show. merely for the purpose of illustrative disclosure,

a preferred embodiment of my invention, it

. being expressly understood, however, that various changes may be made in practice ere the container or cup, as it is Serial No. 248,726.

within the scope of the claims without digressing from my inventive idea.

In the drawings- Figure 1 represents a view of a paint spraying gun or instrument with an attached cup or container, the major portion of the gun being shown in side elevation, the cup or container and the mechanism whereby it is attached to the gun being shown in vertical section.

- Figure 2 is an exploded view in perspective showing the upper portion of the cup or container and the top or lid for the same, to-

gether with the connections whereby it is attached to the gun, and the fastening and securing means whereby the top or lid of the cup or container is fastened or secured in proper position thereon.

Referring now to the drawings and first to Figure 1, the numeral'l designates a paint spraying shown and described in my pending application for patent, Serial No. 161,066,;filed J an. 14, 1927, the details of which, except as they relate to the attachment to the cup or container, form no part of the present invention. This gun has a handle portion 2, a barrel portion 3, trigger 4 and the discharge nozzle 5. Near the nozzle portion of the gun is provided a downward extension 6 having its lower end externally screw-threaded as at 7 to receive the connection through the cup or container hereinafter described. Surrounding the upper portion of this exten sion 6 is a vertical annular air passage 8 which connects with a horizontal air passage 9 and also with another air passage in the barrel leading to the nozzle (not shown). The air passage 9 leads to a valve construction in the barrel (not shown) and thence to an air inlet connection 10 at the lower end of the handle of the gun. This form of air passa e is disclosed in another pending application of mine, Serial No. 126,507, filed August 2, 1926, which eventuated in Patent 1,706,875, dated Mar. 26,1929.

The cup or container is designated generally bv the reference character 11 and may be of any form and shape and is regulated in size only by the ability of the operator to handle gun or instrument of the type this container is cylindrical in shape, having its top open and provided with the beaded or otherwise reinforced edge 12. Near its top edge and extending outwardly therefrom are provided a plurality of studs or projections 13, which in the disclosure take the form of headed rivets having the screw-threaded portion 14 and the Washers 15 secured on the outside. The stud or projection is, therefore, reduced in size from that of the washers 15, which constitute shoulders in the assembl The lid or cover for the cup or container, of course, corresponds in shape to the open top of the container. It is designated generally by the reference character 16, having the depending outer edge 17 and an inner annular flange 18, the two flanges 17 and 18 cooperating to provide a seat 19 to receive a suitable packing or washer material 20, this material being placed so as to fit upon and receive the beaded upper edge 12 of the cup or container. This lid or cover has a. vertical extension in the form of a tube or sleeve 21, which is adapted to be secured to the downward extension 6 of the gun or paint s raying instrument by means of a screwt readed connection. This tube or sleeve is formed of substantially thick material having the bore orpassage 22 formed therein and leading into this passage are a lurality of smaller passages 23 which are a apted to communicate with the vertical annular air passage 8 in the downward extension 6 of the gun or paint spraying instrument. In the up r portion of this tube or sleeve 21 is prowith the internally screw-threaded portion 24, which engages the screw-threaded portion 7 of the downward extension 6 of the gun or aint spraying instrument and the u per e ge 25 of the tube or sleeve 21 is a apted to extend above the internally screwthreaded portion 24 and form an annular rim which en ages washer member 26 interposed between t e outer portion of the downward extension 6 of the gun and the annular rim of the tube or sleeve 21.

A nut member 27 having a bore or openiu%28 therethrough is screwed into the lower on of the tube or sleeve 21 of the lid or cover from its under side closing the passage or bore 22 therethrou 'h and forming a bushing to receive and uide the liquid post or tube 29. This liqui 0st or tube 29 has its upper end screw-threa ed as at 30 for attachment to the internal screw-threads 31 formed on the inner surface of the liquid passage 32 in the downward extension 6 of the un. This post or tube when attached in position to the screw-threaded engagement referred to extends downwardly to a point near the bottom of the cup or container 1 as indicated in Figure 1 of the drawing. The lid or cover liquid contents of the cup or container from the air passage 9 to the air passage 8 in the extension 6, through the openings or passages 23 in the up er end of the tube or sleeve 21 through the ore or passage 22 of the tube or sleeve 21, and thence through ports or passages 33. The liquid in the cu or container subject to this pressure will e forced upwardly through the fluid post or tube 29 and through liquid passage 32 and discharged through the nozzle when the liquid valve in the un is opened.

The means of connecting the lid or cover to the cu or container will now be described. This inc udes the spider or frame 34 which is composed of a central annular hub 35, from which radiate a pluralit of substantially horizontal arms 36, the en s of which are bent downwardly as at 37 and are notched as at 38 to provide a hook or pin receiving means. The inside of the central annular hub is formed with a flat and large screw-thread 39 which forms a cam construction. It is ada ted to receive the actuating member 40 whlch is in the form of a substantial sleeve 41 having a bore of suflicient size to easily receive the tube or sleeve 21. This substantial sleeve 41 has its outer surface rovided with a flat and vertical screwthread 42 complementa to the screw-thread 39 previously describe and is also provided with the operating fin ger or arm 43 which extends laterally therefrom. The substantial sleeve 41 is of considerably greater length than the depth of.

the annular hub 35 so that it may be screwed into and through the same with the lower edge of the substantial sleeve projecting substantiallv beyond the bottom edge of the annular hub 35 and into engagement with a portion of the cover or lid 16. This cover or lid is provided with a slightly raised bearing surface 44, with which the bottom edge of the substantial sleeve 41 is adapted to contact. The sides of the lid or cover are provided with a plurality of notches or recesses 45 to receive the depending portions 37 of the arms 36.

The parts are adapted to be positioned as indicated in the drawin in Figure 2. The spider or fra-ne 34 with t e substantial sleeve positioned therein slides down upon the tube or sleeve 21 until the spider or frame rests upon the raised bearing surface 44, at which point the downward extension 37 of the arms 36 will extend belo the top edge of the cup or container with the recessed portions 38 in line with the studs or projections 13. The rotr tion of the lid or cover in the proper direcpackin bears tightlyagainst the upper edge 0 the cup or container. At the same time the spider or frame will be pulled upwardly due to the can action of the screwthreads 39 and 42 and this movement transmitted to the cup or container itself through the arms of the spider or frame and the studs or projections 13. This results in a very secure attachment of these parts together. Of course, a movement of the sleeve 41 in the opposite direction will result in quick release of the parts and by a slight rotation of the lid or cover relative to the cup or container, it may be removed from the can or container and the supply of the liquid in the latter replenished. p

It is, therefore, seen' that a simple and effective mechanism is provided whereby, the cup or container may be readily detached from the com lete gun assembly for the purpose of cleaning or replenishing the supply of liquid therein, and then may be quickly and readily and securely fastened in position in such a way as to permit the application of a relatively high air ressure thereto. The joints are all tight an secure and the connection is sufiicientl strong to prevent breakage or injury. he parts are all readily detachable one from the other, which is another obvious advantage.

What I claim is 2-- 1. In combination in an apparatus of the character described, a paint spraying instrument having air passages and liquid passages, a container for the liquid to be applied by said instrument, a lidor cover for said container having an extension adapted to be connected to said air and liquid passages in said instrument, and means surrounding said extension for clamping said lid or cover to said container. I

2. In combination in an apparatus of the character described, a paint spraying instrument having air passages and liquid passages, a container for the liquid to be applied by said instrument, a lid orcover for said container having an extension adapted to be connected to said air and liquid passages in said instrument, and means surrounding said extension for clamping said lid or cover to said container, said means including a holding element adapted to engage said container and a cam element adapted to engage said holding element and also said lid or cover to tightly force the lid or cover on said container and hold same thereto.

3. In combination in an apparatus of the character described, a paint spraying instrument having air passages and liquid nassages, a container for the liquid to be applied by said instrument, a lid or cover for said container having an extension adapted to be connected to said air and liquid passages in said instrument, and means surrounding said extension for clamping said lid or cover to said container, said means including a holding element adapted to engage said container and a cam element adapted to engage said holding element and also said lid or cover to tightly force the lid or cover on said container and hold same thereto, said holding element being in the form of a frame or, spider having a plu'rality'of depending arms adapted to engage portions of said container and said cam element being in the form of a rotatable sleeve having cam engagement with said frame or spider.

4. In combination with a container for liquid to be sprayed, a lid or cover for said container having an extension adapted to be secured to a paint spraying instrument, a container having a plurality of projections, means for holdmg the lid or cover on said container, said means including a frame or spider having a plurality of arms formed so as""to engage said projections on said container, and a cam element engaging said frame or spider and also said lid or cover so as to force said lid or cover against said container and to apply a pulling force on said projectionson said container through said arms.

5. In combination with a container for liquid to be sprayed, a lid/or cover for said container havmg an extension adapted to be secured to a paint spraying instrument, a container having a plurality of projections, means for holding the lid or cover on said container, said means being positioned about said extension and movable with reference thereto, said means including a frame or spider havinga plurality of arms formed so as to engage said projections on said container, and a cam element engaging said frame or spider and also said lid or cover so as to force said lid or cover against said container and to apply a pulling force on said projections on said container through said arms.

6. In combination with a container for liquid to be sprayed, a lid on cover for said container having an extension adapted to be secured to a paint spraying instrument, a container having a plurality of projections, means for holding the lid or cover on said container, said means being positioned about said extension and movable with reference thereto, said means including a frame or as: l

' I II I spider having a plurality of arms formed so as to engage said projections on said contain er, said frame or spider having a central hub, a cam element in the form of a sleeve positioned in said hub and having a screwthreaded engagement therewith and adapted to extend through said hub to engage said lid or cover whereby a rotating movement of the cam element in one direct-ion will tightly hold the lid or cover on the container and movement in the other direction will afford release.

7. In combination, in an apparatus of the character described, a container adapted to be attached to a aint spraying instrument and to supply liquid thereto for spraying, including a container body, a lid or cover therefor, the lid or cover having a sleeveextension adapted to be attached to the paint spraying instrument, said container body having a plurality of projections and releasable holdmg means for clamping the lid or cover to the container body including a frame or spider having a central hub with a plurality of arms radiating therefrom, each arm having a downward extension and formed so as to engage said rejections on the container body, said hub eing positioned about said sleeve extension, an actuating member ada ted to fit about said sleeve extension and wi n said hub and having a cam engagement with said hub whereby a movement of a said actuating member will result in movement of the frame or spider and connected arms and the application of force to the projections on the container body, said actuating member being adapted to project through the hub and engage said lid or cover.

8. In combination, in an apparatus of the character described, a container adapted to be attached to a paint spraying instrument and to supply liquid thereto for spraying, including a container body, a lid or cover therefor, the lid or cover having a sleeve extension adapted to be attached to the aint spraying instrument, said container ody having a plurality of projections and releasable'holding means for clamping the lid or cover to the container body including a frame or spider having a central hub with a plurality of arms radiating therefrom, each arm having a downward extension and formed so as to engage said projections on the container body, said hub being positioned about said sleeve extension, an actuating member adapted to fit about said sleeve extension, and within said hub and having a cam engagement with said hub whereby a movement of said actuating member will result in movement of the frame or spider and connected arms and the application of force to the projections on the container body, said actuating member being adapted to project through the hub and engage said lid or cover. said cam engagement being provided by large, flat, complementa-ry screw-threads on the actuating memher and hub of the frame or spider, respectively.

9. In combination in an apparatus of the character described, a container adapted to for receiving and guiding said liquid conveying tube, and means for removably clamping said lid or cover to said container.

10. In combination in an apparatus of the character described. a container adapted to be attached to a paint spraying instrument and to supply liquid thereto for spraying, including a container body, a lid or cover therefor, said lid or cover having a sleeve extending upwardly therefrom and adapted for attachment to said instrument, said lid or cover having openings afl'ording communication between the interior of the container and said sleeve, a liquid conveying tube having one end adapted for attachment to said instrument, means for holding and guiding said liquid conveying tube within said sleeve and into said container, said lid or cover being provided with a washer receiving groove, a washer positioned in said groove and adapted to contact with the top of said container and means for clamping said lid or cover to said container.

11. In combination with a container for liquid to be sprayed, having an open end, a lid or cover for said container having an extension adapted to be secured to a paint spraying instrument so as to communicate with the air passage in said paint spraying instrument, said lid or cover having openings to afford communication between said extension and the interior of said container when the lid or cover is in position. so as to subject the contents of the container to the air pres sure of said air passage. :1 liquid conveying pipe adapted to be connected at one end to the liquid passage of said instrument. means connected to said lid or cover for holding and guiding said pipe and po itioning the pipe within the container when the lid or cover is in position. and clamping means for removablv clamping said lid or cover to said container.

12. In combination with a container for liquid to be spraved. having an open end a lid or cover for said container having an extension adapted to be secured to a paint spraying instrument so as to communicate with the air Ice " adapted to b sleeve passage in said paint spraying instrument,

said lid or cover having openings to afford communication between said extension and the interior of said container when the lid or cover is in position, so as to subject the contents of the container to the air pressure of said air passage, a liquid conveying pipe e connected at one end to t e said instrument, means connected to said lid or cover for holding and guiding said pipe and positioning the pipe 4 within the container when the lid or cover is in position, and clamping means for removably clamping said lid or cover to said container, said clampin means including aholding element adapte to engage the container, and a cam element ada ted to engage sai holding element, said lid or cover being formed with a flat liquid passage of bearing surface against which said cam element bears.

13. In a device of the character described, a container for liquid tobe sprayed, lugs on the container, a lid provided with an extension adapted to be secured to a paint sprayin instrument, a sleeve slidably mounted on sai extension, a spider adapted to engagesaid lugs on said container and adapted to threadedly engage said sleeve, whereby rotation of said sleeve forces said lid against said container and applies a pulling force on said lugs on said container through said spider.

14. In a device of the character described, a container for liquid to be sprayed, lugs on the container, a lid provide with an extension adapted to be secured to a paint sprayin instrument, a sleeve slidably mounted on sai extension and provided with cam shaped rooves, and a spider adapted to engage said ugs on said container, and pro with projections adapted to be received by said cam shaped grooves whereby rotation of said forces said lid against said container by the interengaging o the grooves on said sleeve and said pro 'ections on said spider and applies a ullin orce on said lugs on said containert roug said spider.

15. In a device of the character described,

a container for liquid tobe sprayed, lugs on the container, a lid provided with an extension adapted to be secured to a paint spraying instrument and having a bearing surface, a sleeve slidably mounte on said extension and adapted to abut said bearing surface, a spider adapted to engage said lugs on said container and adapted to threadedly engage said sleeve, whereby rotation of said sleeve orces said lld against said container and applies a ulling force on said lugs on said container t rough 'said spider.

16. In a device of the character described a container for liquid to be sprayed, lugs on the container, a lid provided with an extension adapted to be secured to a paint spraying instrument, a sleeve slidably mounted on said extension and provided with cam shaped grooves, a spider adapted to engage said lugs d said lid also 17 In a device of the character 'escribed a container for liquid to be sprayed, a plu- 7 rality of projections on the container, a 11 provided with a tubular extension adapted to be secured to a paint spraying instrument, being formed with notches in its outer edges, a sleeve slidably mounted on said extension and a spider provided with arms adapted to engage said projections on said container, said arms being adapted to be received and guided by said notches in said lid, whereb rotation of said sleeve forces said lid against said container and applies a pulling force on said prog'ections on said container through the arms 0 said spider. In testimony that I claim the foregoing, have-hereunto setmy hand this 9th day of January, 1928.

AUSTIN H. DOWNS, 

